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Newspace parameters

Copy content comment:Compute space of new eigenforms
 
Copy content gp:[N,k,chi] = [50,8,Mod(1,50)] mf = mfinit([N,k,chi],0) lf = mfeigenbasis(mf)
 
Copy content magma:// Please install CHIMP (https://github.com/edgarcosta/CHIMP) if you want to run this code chi := DirichletCharacter("50.1"); S:= CuspForms(chi, 8); N := Newforms(S);
 
Copy content sage:from sage.modular.dirichlet import DirichletCharacter H = DirichletGroup(50, base_ring=CyclotomicField(2)) chi = DirichletCharacter(H, H._module([0])) N = Newforms(chi, 8, names="a")
 
Level: \( N \) \(=\) \( 50 = 2 \cdot 5^{2} \)
Weight: \( k \) \(=\) \( 8 \)
Character orbit: \([\chi]\) \(=\) 50.a (trivial)

Newform invariants

Copy content comment:select newform
 
Copy content sage:traces = [1,8,43] f = next(g for g in N if [g.coefficient(i+1).trace() for i in range(3)] == traces)
 
Copy content gp:f = lf[1] \\ Warning: the index may be different
 
Self dual: yes
Analytic conductor: \(15.6192512742\)
Analytic rank: \(0\)
Dimension: \(1\)
Coefficient field: \(\mathbb{Q}\)
Coefficient ring: \(\mathbb{Z}\)
Coefficient ring index: \( 1 \)
Twist minimal: yes
Fricke sign: \(+1\)
Sato-Tate group: $\mathrm{SU}(2)$

$q$-expansion

Copy content comment:q-expansion
 
Copy content sage:f.q_expansion() # note that sage often uses an isomorphic number field
 
Copy content gp:mfcoefs(f, 20)
 
\(f(q)\) \(=\) \( q + 8 q^{2} + 43 q^{3} + 64 q^{4} + 344 q^{6} + 974 q^{7} + 512 q^{8} - 338 q^{9} + 87 q^{11} + 2752 q^{12} + 14828 q^{13} + 7792 q^{14} + 4096 q^{16} - 35571 q^{17} - 2704 q^{18} + 20615 q^{19} + 41882 q^{21}+ \cdots - 29406 q^{99}+O(q^{100}) \) Copy content Toggle raw display

Embeddings

For each embedding \(\iota_m\) of the coefficient field, the values \(\iota_m(a_n)\) are shown below.

For more information on an embedded modular form you can click on its label.

Copy content comment:embeddings in the coefficient field
 
Copy content gp:mfembed(f)
 
Label   \(\iota_m(\nu)\) \( a_{2} \) \( a_{3} \) \( a_{4} \) \( a_{5} \) \( a_{6} \) \( a_{7} \) \( a_{8} \) \( a_{9} \) \( a_{10} \)
1.1
0
8.00000 43.0000 64.0000 0 344.000 974.000 512.000 −338.000 0
\(n\): e.g. 2-40 or 80-90
Significant digits:
Format:

Atkin-Lehner signs

\( p \) Sign
\(2\) \( -1 \)
\(5\) \( -1 \)

Inner twists

This newform does not admit any (nontrivial) inner twists.

Twists

       By twisting character orbit
Char Parity Ord Mult Type Twist Min Dim
1.a even 1 1 trivial 50.8.a.h yes 1
3.b odd 2 1 450.8.a.j 1
4.b odd 2 1 400.8.a.f 1
5.b even 2 1 50.8.a.a ✓ 1
5.c odd 4 2 50.8.b.e 2
15.d odd 2 1 450.8.a.q 1
15.e even 4 2 450.8.c.i 2
20.d odd 2 1 400.8.a.o 1
20.e even 4 2 400.8.c.g 2
    
        By twisted newform orbit
Twist Min Dim Char Parity Ord Mult Type
50.8.a.a ✓ 1 5.b even 2 1
50.8.a.h yes 1 1.a even 1 1 trivial
50.8.b.e 2 5.c odd 4 2
400.8.a.f 1 4.b odd 2 1
400.8.a.o 1 20.d odd 2 1
400.8.c.g 2 20.e even 4 2
450.8.a.j 1 3.b odd 2 1
450.8.a.q 1 15.d odd 2 1
450.8.c.i 2 15.e even 4 2

Hecke kernels

This newform subspace can be constructed as the kernel of the linear operator \( T_{3} - 43 \) acting on \(S_{8}^{\mathrm{new}}(\Gamma_0(50))\). Copy content Toggle raw display

Hecke characteristic polynomials

$p$ $F_p(T)$
$2$ \( T - 8 \) Copy content Toggle raw display
$3$ \( T - 43 \) Copy content Toggle raw display
$5$ \( T \) Copy content Toggle raw display
$7$ \( T - 974 \) Copy content Toggle raw display
$11$ \( T - 87 \) Copy content Toggle raw display
$13$ \( T - 14828 \) Copy content Toggle raw display
$17$ \( T + 35571 \) Copy content Toggle raw display
$19$ \( T - 20615 \) Copy content Toggle raw display
$23$ \( T - 22218 \) Copy content Toggle raw display
$29$ \( T + 5760 \) Copy content Toggle raw display
$31$ \( T - 302942 \) Copy content Toggle raw display
$37$ \( T + 199366 \) Copy content Toggle raw display
$41$ \( T + 668523 \) Copy content Toggle raw display
$43$ \( T + 143212 \) Copy content Toggle raw display
$47$ \( T + 338316 \) Copy content Toggle raw display
$53$ \( T + 1094322 \) Copy content Toggle raw display
$59$ \( T + 2135520 \) Copy content Toggle raw display
$61$ \( T + 1939318 \) Copy content Toggle raw display
$67$ \( T + 3348751 \) Copy content Toggle raw display
$71$ \( T - 3005652 \) Copy content Toggle raw display
$73$ \( T + 3048397 \) Copy content Toggle raw display
$79$ \( T - 5485130 \) Copy content Toggle raw display
$83$ \( T - 5205933 \) Copy content Toggle raw display
$89$ \( T + 832665 \) Copy content Toggle raw display
$97$ \( T - 5314754 \) Copy content Toggle raw display
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